since the main menu does not respond but rather the functionality 
mapped to the button is executed, I do not think that this is a 
hardware problem with either eyetv or the line of sight. Something is 
likely to go wrong in event handling. I'll audit the respective code 
later.

If you find step by step instructions on how to reproduce this, I'd 
be most thankful since it will make it a lot easier for me to find 
the cause of the problem.

Thanks!

Felix